Finding the Fourth Proportional to 149,178.24, 205,870.80 and 85,528.08
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Solution
The fourth proportional to 149,178.24, 205,870.80 and 85,528.08 is: 118,031.52
Step by Step Solution
- Step 1: Write the proportion equation
149,178.24 : 205,870.80 = 85,528.08 : x - Step 2: Convert to fraction form
149,178.24/205,870.80 = 85,528.08/x - Step 3: Cross multiply
149,178.24x = 205,870.80 × 85,528.08 - Step 4: Simplify right side
149,178.24x = 17,607,734,252.06 - Step 5: Solve for x
x = 17,607,734,252.06/149,178.24 - Step 6: Final answer
x = 118,031.52
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.